Journal
OPTICS EXPRESS
Volume 24, Issue 10, Pages 10385-10390Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.010385
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Funding
- National Natural Science Foundation of China (NSFC) [11274203]
- Junta de Castilla y Leon [SA086A12-2]
- Centro de Laseres Pulsados (CLPU)
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We reported on the passively Q-switched waveguide lasers based on few-layer transition metal diselenide, including molybdenum diselenide (MoSe2) and tungsten diselenide (WSe2), as saturable absorbers. The MoSe2 and WSe2 membranes were covered on silica wafers by chemical vapor deposition (CVD). A low-loss depressed cladding waveguide was produced by femtosecond laser writing in a Nd: YAG crystal. Under optical pump at 808 nm, the passive Q-switching of the Nd: YAG waveguide lasing at 1064 nm was achieved, reaching maximum average output power of 115 mW (MoSe2) and 45 mW (WSe2), respectively, which are corresponding to single-pulse energy of 36 nJ and 19 nJ. The repetition rate of the Q-switched waveguide lasers was tunable from 0.995 to 3.334 MHz (MoSe2) and 0.781 to 2.938 MHz (WSe2), and the obtained minimum pulse duration was 80ns (MoSe2) and 52 ns (WSe2), respectively. (C) 2016 Optical Society of America
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